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If a square -2 a minus one equals to zero then find a minus one a

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Answer:

To find a and minus one a, we need to factorize the equation -2a^2 - a + 1 = 0.

First, we can simplify the equation by multiplying both sides by -1, so we have:

2a^2 + a - 1 = 0

Next, we can use the quadratic formula to solve for a:

a = (-b ± √(b^2 - 4ac)) / 2a

Plugging in the values for our equation, we have:

a = (-1 ± √(1^2 - 4(2)(-1))) / 2(2)

Simplifying this equation, we get:

a = (-1 ± √9) / 4

a = (-1 ± 3) / 4 Therefore, we get two possible values for a: a = -1/2 or a = 1/2

Now, we can use these values to find minus one a: If a = -1/2, then minus one a = -2/2 = -1 If a = 1/2,

then minus one a = 3/2 = 1Therefore, a can't be either -1/2 or 1/2.

Explanation:

To find a and minus one a, we need to factorize the equation -2a^2 - a + 1 = 0.

First, we can simplify the equation by multiplying both sides by -1, so we have:

2a^2 + a - 1 = 0

Next, we can use the quadratic formula to solve for a:

a = (-b ± √(b^2 - 4ac)) / 2a

Plugging in the values for our equation, we have:

a = (-1 ± √(1^2 - 4(2)(-1))) / 2(2)

Simplifying this equation, we get:

a = (-1 ± √9) / 4

a = (-1 ± 3) / 4 Therefore, we get two possible values for a: a = -1/2 or a = 1/2

Now, we can use these values to find minus one a: If a = -1/2, then minus one a = -2/2 = -1 If a = 1/2,

then minus one a = 3/2 = 1Therefore, a can't be either -1/2 or 1/2.

User Iulia Mihet
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